Saturday

October 10, 2015
Total # Posts: 2,217

**chemistry**

A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constant-temperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of 0.20 atm. (C) If gas in (b) is allowed to ...
*December 28, 2010*

**math**

Ok thank you so much :)
*December 21, 2010*

**math**

Hi, Can someone please help me with my math. The distance between Capeton and Jonesville is 80 miles. Thescale on the map is 0.75in : 10 miles. How far apart are the cities on the map? A. 6in B. 60in C. 600in D. 1067in Thank you :)
*December 21, 2010*

**Math Problem Solving**

Oh im sorry i did this problem wrong. Ms.sue did it correct :) Sorry again.
*December 21, 2010*

**Math Problem Solving**

6n+8n-2n+3/2 6n+8n=14n-2n=12n+3/2 answer: 12n+3/2
*December 21, 2010*

**chemistry**

8. If x grams of S are needed to obtain 0.4 grams of SO3, how many grams of SO2 can be obtained from the same amount of S? (A) 0.32 g (B) 0.62 g (C) 0.40 g (D) 0.16 g (E) Can not be calculated from the given data. I am not sure how to set up this problem. I calculate the ...
*December 20, 2010*

**Psychology**

As you enter your Grandma Thorndike's house you ears being to hurt as you notice she is once again playing her favorite "Contry Music" album. You soon get caught up in the christmas festivities...talking with family..eating...and playing psychological trivia. The...
*December 19, 2010*

**Medical Insurance**

A hospital received a reimbursement rejection from the fiscal intermediary for two outpatient procedures that were performed the same day. Who generated the rejection?
*December 17, 2010*

**helping abused children**

what happens in most cases of sexual abuse a-the abuser is removed immediatley from the home b-the abuser is prosecuted in court c-nothing can be done until evidence is found d-the abuser receive institutuional counseling as a precautionary measure
*December 16, 2010*

**helping abused children**

the stubborn child law of 1646 by the state of massachusetts permits parents to do what
*December 16, 2010*

**math**

Jim divied -2 by an integer and his result was between -1 and 0 Which integur could have been the divisor
*December 16, 2010*

**math 116**

-2[38(-56-50) -2[38-106]
*December 16, 2010*

**Algebra**

How do you find the Horizontal Asymptote of y= (x+2)/(x-6)?
*December 14, 2010*

**Geometry**

Thank You
*December 14, 2010*

**Geometry**

Ya its correct
*December 14, 2010*

**Geometry**

The m<A is 10 more than 4 times its supplement. Find the m<A. I dont understand how to solve this problem.. Thank You for your help.
*December 14, 2010*

**AlgebrAlgebra-Mathmate or BobPursley or Reiny**

Thank you-I understand what you're saying-I really appreciate the help
*December 14, 2010*

**AlgebrAlgebra-Mathmate or BobPursley or Reiny**

I had asked a question earlier and bob pursley nicely answered it but I do have a question concerning it still- perhaps someone could clarify it- f(x) = logx is a logarthmic function. Bob Pursley said it could be because the base is implied but my question is the way it is ...
*December 14, 2010*

**Business Communication**

You are a technical writer in a large company who is working on a training manual to help new users learn the company's computer system. Employees will use your manual in training seminars taught by your company's trainers. The manual will also serve as an on-the-job ...
*December 14, 2010*

**Business Communication**

I put A as the answer
*December 14, 2010*

**Business Communication**

A. decision makers or opinion molders in an organization. B. everyone who receives it. C. individuals with the highest status in an organization. D. people who represent the opinions or attitudes of the majority.
*December 14, 2010*

**Business Communication**

The primary audience for your message is made up of
*December 14, 2010*

**Algebra-Mathmate or Reiny or Dr. Bob, please check**

Thank you-could you look at my new post-I just needed clarification about f(x) = logx you said this would be true but doesn't it need parentheses or a separation between log and x for this to be correct? Thank you
*December 14, 2010*

**Algebra-Bob Pursley please check-Mathmate or Reiny or Dr. Bob, please check**

I just noticed something-I had asked about if f(x) = 1/x is an exponential function and I think you rewrote it as f(x) = x^-1. Therefore, f(x) = 1/x is NOT an exponential function, correct?
*December 14, 2010*

**Algebra-Mathmate or Reiny or Dr. Bob, please check**

Thank you for the explanations- I appreciate it
*December 14, 2010*

**Algebra-Bob Pursley orMathmate or Reiny or Dr. Bob, please check**

Could one of you please check when you have time. Thank you
*December 14, 2010*

**Algebra-Mathmate or Reiny or Dr. Bob, please check**

I have two short questions which I think I know the answer-could you please check? If I write log(b)x - 2log(b)y as a single logarithm it would be log(b) x/y^2, correct? If not please help and Is the function f(x) = 1/x a exponential function -I think it would be because it ...
*December 14, 2010*

**Algebra-Please check**

When you have time,Could someone please check this morning the two problems I listed in the first post along with this one The function f(x) = logx is a logarthmic function-I think this is false because it should be written as log(then a number)x, correct Thank you very much
*December 14, 2010*

**Algebra**

I have two short questions which I think I know the answer-could you please check? If I write log(b)x - 2log(b)y as a single logarithm it would be log(b) x/y^2, correct? If not please help and Is the function f(x) = 1/x a exponential function -I think it would be because it ...
*December 14, 2010*

**Algebra-Reiny please explain this**

Reiny, thank you-I get it now thanks again
*December 13, 2010*

**Algebra-Reiny please explain this**

Hi Reiny, I posted this problem earlier and you responded but I don't get the reasoning- The problem was -2log8(x+1) = -8 you said multiply by -2 and then you put log8(x+1)=4(wasn't that dividing by -2) log8(x+1)^2 = 8 (how did you get to the power of 2 and =4 became =...
*December 13, 2010*

**Algebra-Could Mathmate or Reiny or Dr. Bob look at this if you have time**

Please give me some direction for the above problem Thank you
*December 13, 2010*

**Algebra**

How do I start to solve -2log8(x+1) = -8? I think -2log8(x+1) is log8^(x+1)to the 2nd but then what do I do because then I think I should do log-8/log8 = x+1)^2 but that doesn't work at all Thank you for any help you can give
*December 13, 2010*

**10th grade**

Suppose that a kid was casually sledding down a gentle slopping hill going 6 feet per second. Then, he hit a steeper part of the hill and started accelerating at a rate of 1.2 feet/second squared. At the bottom of the steep part of the hill he was going 10.56 feet/second. How ...
*December 9, 2010*

**Calculus**

that weird 'e' symbol is supposed to be a theta sign
*December 8, 2010*

**Calculus**

A line through the origin, rotates around the origin in such a way that the angle, ¦È, between the line and the positive x-axis changes at the rate of d¦È/dt for time t¡Ý0. Which expression gives the rate at which the slope of the line ...
*December 8, 2010*

**Calculus**

If y=xln(x)^2 , then dy/dx=
*December 8, 2010*

**Calculus**

If f(x)= sqrt(4sin(x)+2), then f'(0)=
*December 8, 2010*

**physics**

A plane designed for vertical takeoff has a mass of 51 kg. Find the net work Wnet as it accelerates upward at 1 m/s2 through a distance of 34 m after starting from rest.
*December 8, 2010*

**Calculus**

A rectangle is insribed between the parabolas y=4(x^2) and y=30-x^2. What is the maximum area of the rectangle? Domain: [-3,3] Range:[-2, 40] THANK YOU!
*December 7, 2010*

**Math question**

I don't either I got 62.8
*December 7, 2010*

**Calculus**

A particle is moving around the unit circle (the circle of radius 1 centered at the origin). At the point (.6 , .8), the particle has horizontal velocity dx/dt=3. What is its vertical velocity dy/dt at that point? I don't know what equation to use or anything for this ...
*December 7, 2010*

**Calculus**

If the volume of a cube is increasing at 24 in^3/min and the surface area of the cube is increasing at 12 in^2/min, what is the length of each edge of the cube? I know that dV/dt=24 and ds/ds=12. I also know that Volume=s^3 and Surface Area=6*s^2, but what do I do from there?
*December 7, 2010*

**Calculus**

What is the linearization of f(x)=e^x at x=1?
*December 7, 2010*

**statistics**

Hello. I recently had this question on my Midterm "Suppose the number of students coming to Thomas’s Monday office hours follows a Poisson distribution with mean 5. Further suppose that 30% of these students wear glasses. What is the probability that for the next ...
*December 7, 2010*

**Anatomy**

The gland that helps regulate the endocrine system by secreting stimulating hormones is the____. Thanks for helping!
*December 6, 2010*

**Spanish**

Thank you
*December 6, 2010*

**Spanish**

Voy a la piscina means I'm going to the pool, correct? Would I say I'm going to the mail as Voy al correo. How do I say I need to send a card? Thank you
*December 6, 2010*

**physics**

A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 6.2 m higher than A, with speed v/2. Calculate the maximum height reached by the stone above point B.
*December 5, 2010*

**Physics**

A colony of troglodytes has been in a lengthy feud with its neighbors on the adjacent cliff. Colony A finally develops an important military breakthrough: it rolls bombs off its cliff at known rates of speed, thus gaining pinpoint accuracy in its attacks. The acceleration of ...
*December 3, 2010*

**Physics**

A plane drops a hamper of medical supplies from a height of 3410 m during a practice run over the ocean. The plane's horizontal velocity was 121 m/s at the instant the hamper was dropped. What is the magnitude of the overall velocity of the hamper at the instant it strikes...
*December 3, 2010*

**math**

Your brother traveled 117 miles in 2.25 hours to come home for Christmas. What's the average speed that he was traveling?
*December 1, 2010*

**Spanish**

How would I say "He looks at art." Thank you
*November 30, 2010*

**chemistry**

Which of the following acids has the weakest conjugate base? a....4.2E-09 b...9.2E-03 c....6.3E-06 d....1.2E-01
*November 30, 2010*

**chemistry**

what is teh equilibrium concentration of acetate ion if the equilibrium concentration of acetic acid is .40 M, the pH is 3.85, and Ka is 1.8E-05?
*November 30, 2010*

**chemistry**

which of the following salts do you expect to have the lowest water solubility? a...SrF2 b...Rb2O c...Ga2O3 d...CsNO3 All the numbers are subscripts
*November 30, 2010*

**chemistry**

to find the molarity of an aqueous solution of an ionic solid what do you need to know? a... mass of solid, formula of solid, volume of water b...moles of solid, formula of solid, volume of water c....mass of solid, formula of solid, volume of solution d....moles of solid, ...
*November 30, 2010*

**chemistry**

is a negative Kc possible. Also, is a negative Ka possible?
*November 30, 2010*

**chemistry**

what is the pH of an .200 M aqueous solution of NaOH?
*November 30, 2010*

**Chemistry**

Umm, I don't understand, how do I found out what the limiting reagent is?
*November 29, 2010*

**Chemistry**

8.40 grams of Hydrogen gas reacts with 48.2 grams of Oxygen gas. Give the mass of the water vapor produced and the mass of the excess reactant left over. Can somebody please explain stoichiometry to me? I've failed the test and the retest. I'm usually able to balance ...
*November 29, 2010*

**History**

How did the shortage of good farmland contribute to the desire for federal union (Confederation)
*November 26, 2010*

**History**

What areas of British North America seemed most vulnerable to American expansion? How did the shortage of good farmland contribute to the desire for federal union (Confederation?)
*November 26, 2010*

**helping abused children**

what is the best statement about children who are abused
*November 25, 2010*

**physics**

thank you!
*November 18, 2010*

**physics**

Two masses are connected by a string. Mass A is on a flat roof and mass B is hanging over the edge of the roof. The mass on the roof is 15 kg and the hanging mass is 5 kg. The edge of the roof is 100 m above the ground. The two masses are initially at rest with the hanging ...
*November 18, 2010*

**math cal**

A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest whole number.)
*November 17, 2010*

**physics**

if you were stationary in space at the same distance from the sun as the eath is, how much force would the sun be exerting on you? what would be your acceleration towrd the sun? what would be the sun's acceleration toward you? okay so im a little confused where to go with ...
*November 14, 2010*

**chemistry**

If I make an ice pack with 750 mL of water, what mass of ammonium chloride must I include to get the temperature to drop from 20 degrees celsius to 5 degrees celsius. The heat of solution of the water and ammonium chloride is 14.8 kJ/mole.
*November 14, 2010*

**Chemistry**

Calculate the velocities of electrons with de Broglie wavelengths of 1.7 102 nm and 5.0 nm, respectively.
*November 13, 2010*

**chemistry**

i think its fluorine but im not sure if its right but i do believe that it is not right
*November 9, 2010*

**chemistry**

Which halogen can form only one oxidation state other than zero?
*November 9, 2010*

**science/math**

One multicellular organism is a cube. Each of its sides is 3cm long. Each of its cells is 1cm to the third power.How many cells does it have? If each side doubles in length,how many cells will it then have?
*November 9, 2010*

**com156**

• Write two paragraphs explaining the changes that you would make to revise the paper. The minimum word count for these two paragraphs is 400 words.
*November 9, 2010*

**Physics**

a. you do v^2 = vi^2 = 2aD then u do V= vi + at to get time as 20.3 b. D= Vox*T (415.7)(20.3) = 8440m c.430m/s at 14.8* downward
*November 7, 2010*

**Physics**

a rifle is fried from the top of a building 220 meters high with an initial velocity of 425 m/s at an angle of 12.0 degrees above the horizontal. a. how long will it take for the bullet to reach the ground? b. how far from the base of the building will the bullet strike the ...
*November 7, 2010*

**cal**

never mind i think i got the answer..thanks any way:)
*November 7, 2010*

**cal**

((4)/(3)x)*(sqrt(3-x)) i'm not sure how to find the derivative I know that I have to use chain rule so would it be 4/3(sqrt(3-x)+((4/3)x)((1/(3-x)^-.5) If this is right can someone help me simplify it
*November 7, 2010*

**math**

solve for x 2(e^-7x)=5
*November 7, 2010*

**English**

What are some differences between Beowulf and Wanderer?
*November 7, 2010*

**English**

Is there any basic format for a graphic organizer?
*November 7, 2010*

**english**

I really don't understand how to scan a poem for iambic pentameter. Help!!
*November 7, 2010*

**english **

does this sentence make sense? They’re excited about the spring fling Hannah replies, as she her cheeks stain scarlet.
*November 6, 2010*

**english**

I need to contrast and compare Beowulf's speech (lines 365-428) with Gaiwain's speech (lines 343-361)
*November 6, 2010*

**12th grade**

I am assuming you are talking about committees... Committees examine each bill and combine like bills to create a final bill that is presented to the Legislature.
*November 5, 2010*

** Anonymous and bobpursley**

can you please Anonymous and bobpursley explain this to me. Please and thank you
*November 4, 2010*

**physics**

okay but can you explain to me how to find N1 and N2
*November 4, 2010*

**physics**

can u explain to me what you mean by y direction is equal to and for the force *distance *the angle i don't know the angle for the question
*November 4, 2010*

**physics**

you just have to add w w w to the website
*November 4, 2010*

**physics**

img145.imageshack.us/img145/7130/picture1n.png this is basically the diagram to my question A person of mass m = 62 kg is doing push-ups as shown in the attached figure. The distances are a = 91 cm and b = 60% of l1. Calculate the vertical component of the normal force exerted...
*November 4, 2010*

**math**

use the distributive property so 100*20 and 100*40 then multiply them :)
*November 4, 2010*

**Chemistry**

A certain brand of iron suppluement contains FeSo4 7H20 with miscellaneous binders and fillers suppose 22.93 mL of KMnO4 solution used in the question above are needed to oxidize Fe2+ to Fe3+ in a 0.4927g pill. What is the mass percent of FeSo4 7H20(molar mass 278.03 g/mol) in...
*November 2, 2010*

**CHEMISTRY**

Thanks
*November 1, 2010*

**precalc**

If a savings fund pays interest at a rate of 10% per year compounded semiannually, how much money invested now will amount to $5000 after 1 year? Please round the answer to the nearest cent.
*October 31, 2010*

**Physics**

Your car is stuck in the mud and two friends are helping you. One is pulling on your car with a force of 370 N at a 40 degree angle and the other is pulling with a force of 450 N at a 30 degree angle. A force of 725 N is required to remove the car. Is the car still stuck? ...
*October 29, 2010*

**1st grade**

how are elephant and dinosaur and whales are alike
*October 27, 2010*

**Science **

Cannabis tricks nerves in the brain into sending distorted messages. Which of the drugs effects on the body could this explain??? Helpp!
*October 22, 2010*

**Physics**

What is the equation for average velocity given x1 (initial distance), x2 (final distance), t1 (initial time) and t2 (final time)?
*October 21, 2010*

**pre calc trig check my work please**

sin x + cos x -------------- = ? sin x sin x cos x ----- + ----- = sin x sin x cos x/sin x = cot x this is what i got, the problem is we have a match the expression to the equation work sheet and this is not one of the answers. need to figure out what im doing wrong so i can ...
*October 20, 2010*

**3rd grade math**

use any method estimate 667-651
*October 20, 2010*